Superintegrability, Lax matrices and separation of variables

Oksana Yermolayeva (yermolae@crm.umontreal.ca)
CRM and Concordia
Centre de recherches mathématiques
Université de Montréal

Abstract

We indicate how variation of the pole parameters occurring in the Lax matrix representation of integrable systems leads to different maximal sets of commuting invariants (and correspondingly, different separating coordinates of spectral type). It follows that invariants that do not depend on such coordinate determining parameters belong simultaneously to independent commuting sets, leading to superintegrability.